code: def testBasic1(self):
      self._testListDiff(
          x=[1, 2, 3, 4], y=[1, 2], out=[3, 4], idx=[2, 3]
      )
  
file_path: tensorflow/tensorflow/compiler/tests/listdiff_op_test.py
imports: import numpy
  from tensorflow.compiler.tests import xla_test
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import ops
  from tensorflow.python.ops import array_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 2 for calling the ListDiffTest obj's underlying member method code with example usage: obj.testBasic1() without return types